<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片使徒 -->
    <el-card>
      <!-- 功能行 -->
      <el-row>
        <el-col>
          <el-button
            type="primary"
            @click="addDialogVisible = true"
            icon="el-icon-plus"
            >添加角色</el-button
          >
        </el-col>
      </el-row>
      <!-- 角色列表 -->
      <el-table :data="rolesList" border>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <!-- 权限展示 -->
            <el-row
              :class="['bdbottom', i1 == 0 ? 'bdtop' : '']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二级三级权限 -->
              <el-col :span="19">
                <el-row
                  :class="[i2 == 0 ? '' : 'bdtop']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <!-- 二级权限 -->
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 三级权限 -->
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <pre></pre>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              size="mini"
              icon="el-icon-edit"
              @click="showEditDialog(scope.row)"
              >编辑</el-button
            >
            <el-button
              type="danger"
              size="mini"
              icon="el-icon-delete"
              @click="removeRoleBuId(scope.row)"
              >删除</el-button
            >
            <el-button
              type="warning"
              size="mini"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addDialogVisible"
      width="40%"
      @closed="addDialogClosed"
    >
      <el-form
        :model="addForm"
        :rules="addRules"
        ref="addFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改对话框 -->
    <el-dialog
      title="修改角色"
      :visible.sync="editDialogVisible"
      width="40%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editRules"
        ref="editFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="updateRole">确 定</el-button>
      </span>
    </el-dialog>
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="40%"
      @closed="closeRightsDialog"
    >
      <!-- 树形控件 -->
      <el-tree
        class="tree"
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  created () {
    this.getRolesList()
  },
  data () {
    return {
      // 角色列表
      rolesList: [],
      // 删除对话框是否课件
      deleteDialogVisible: false,
      // 要删除的角色
      toDeleteRole: {},
      // 添加对话框是否课件
      addDialogVisible: false,
      // 添加的角色
      addForm: {
        roleName: '',
        roleDesc: '',
      },
      // 添加 表单验证规则
      addRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
        ],
      },
      // 是否显示修改对话框
      editDialogVisible: false,
      //
      editForm: {},
      editRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
        ],
      },
      // 分配权限对话框是否可见
      setRightDialogVisible: false,
      // 所有权限的数据
      rightsList: [],
      // 树形控件树形绑定
      treeProps: {
        label: 'authName',
        children: 'children',
      },
      // 默认选中的节点
      defKeys: [],
      curRoleId: ''
    }
  },
  methods: {
    // 获取角色列表
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表错误')
      }
      this.rolesList = res.data
    },
    // 添加角色
    async addRole () {
      this.$refs.addFormRef.validate(async (valid) => {
        if (valid) {
          const { data: res } = await this.$http.post('roles', this.addForm)
          if (res.meta.status !== 201) {
            return this.$message.error('添加角色失败')
          }
          this.addDialogVisible = false
          this.$message.success('添加角色成功')
          this.getRolesList()
        } else {
          this.$message.error('请填入有效信息！')
        }
      })
    },
    showEditDialog (roleInfo) {
      this.editDialogVisible = true
      this.editForm = roleInfo
    },
    async updateRole () {
      this.$refs.editFormRef.validate(async (valid) => {
        if (valid) {
          const { data: res } = await this.$http.put(
            'roles/' + this.editForm.id,
            {
              roleName: this.editForm.roleName,
              roleDesc: this.editForm.roleDesc,
            }
          )
          if (res.meta.status !== 200) {
            return this.$message.error('修改角色失败')
          }
          this.editDialogVisible = false
          this.$message.success('修改角色成功')
          this.getRolesList()
        } else {
          this.$message.error('请填入有效信息！')
        }
      })
    },
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 根据id删除对应用户信息
    async removeRoleBuId (roleInfo) {
      const confirmResult = await this.$confirm(
        '是否删除用户  ' + roleInfo.roleName + '?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      if (confirmResult !== 'confirm') {
        return
      }
      const { data: res } = await this.$http.delete('roles/' + roleInfo.id)
      if (res.meta.status !== 200) return this.$message.error('删除角色失败')
      this.$message.success('删除角色成功')
      this.getRolesList()
    },
    async removeRightById (roleInfo, rightId) {
      const confirmResult = await this.$confirm('是否删除该权限?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      }).catch((err) => err)
      if (confirmResult !== 'confirm') {
        return
      }
      const { data: res } = await this.$http.delete(
        'roles/' + roleInfo.id + '/rights/' + rightId
      )
      if (res.meta.status !== 200) return this.$message.error('删除权限失败')
      this.$message.success('删除权限成功')
      roleInfo.children = res.data
    },
    // 显示权限列表
    async showSetRightDialog (role) {
      this.curRoleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限失败')
      }
      this.rightsList = res.data
      this.getLeafKeys(role, this.defKeys)
      console.log(role)
      console.log(this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys (node, arr) {
      // 如果当前节点不包含children属性，是三级节点
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    closeRightsDialog () {
      this.defKeys = []
    },
    // 分配权限
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.curRoleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  },
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.tree{
  height: 400px;
  overflow: auto;
}
</style>